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This shows you the differences between two versions of the page.

--- datatrak:references [2020/05/31 15:27] – [Hyperbolic receivers -- Decca] philpem
+++ datatrak:references [2022/05/17 00:24] – [System (general)] philpem
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 ====== References and information sources ======
+===== Books =====
+  * Sonnenberg, G.J. (1970). **Radar and Electronic Navigation**, 4th Edition. Newnes-Butterworths. ISBN 0408000031.
 ===== Hyperbolic receivers -- Decca =====
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     * Based on Last's design. Measures position from the "Orange" Decca Multipulse channel using phase measurement.
     * Includes location algorithm which may also be useful for Datatrak.
-  * Fisher, A.J.. (1993). **New algorithms for hyperbolic radionavigation.** Radar and Signal Processing, IEE Proceedings F. 140(2) p. 145-152. DOI: 10.1049/ip-f-2.1993.0021. \\ Online: https://www-users.cs.york.ac.uk/~fisher/pubs/navig.ps.Z {{anchor:Fisher1993}}
+  * Fisher, A.J. (1998). **A Test-Bed for Low-Frequency Radionavigation.** \\ Online: https://www.semanticscholar.org/paper/A-Test-Bed-for-Low-Frequency-Radionavigation-Fisher/da242762b6217e421563be8e97267a48bd2e490e
+  * Fisher, A.J. (1993). **New algorithms for hyperbolic radionavigation.** Radar and Signal Processing, IEE Proceedings F. 140(2) p. 145-152. DOI: 10.1049/ip-f-2.1993.0021. \\ Online: https://www-users.cs.york.ac.uk/~fisher/pubs/navig.ps.Z {{anchor:Fisher1993}}
@@ Line 14: / Line 19: @@
 ==== System (general) ====
-  * Banks, K. M. (1989). **DATATRAK Automatic Vehicle Location and Position Reporting System**. In: Conference Record of papers presented at the First Vehicle Navigation and Information Systems Conference (VNIS ’89), 0. IEEE. \\ Available from: <http://dx.doi.org/10.1109/VNIS.1989.98765>. {{anchor:Banks1989}}
+  * Banks, K. M. (1989). **Integrated automatic vehicle location and position reporting system**. \\ Available from: https://ieeexplore.ieee.org/document/19317
+  * Banks, K. M. (1989). **DATATRAK Automatic Vehicle Location and Position Reporting System**. In: Conference Record of papers presented at the First Vehicle Navigation and Information Systems Conference (VNIS ’89), 0. IEEE. \\ Available from: http://dx.doi.org/10.1109/VNIS.1989.98765. {{anchor:Banks1989}}
     * Includes a lot of information about the 16-slot and 24-slot navigation slot structure, and the UHF back-channel.
     * Also includes information on what can be assumed to be the Mk1 Locator (68008 processor, -110dBm RF sensitivity)
+  * Banks, K. M. (1991). **Datatrak automatic vehicle location system in operational use in the UK**. In: Vehicle Navigation and Information Systems Conference, 1991, IEEE. \\ Available from: https://doi.org/10.1109/VNIS.1991.205823. {{anchor:Banks1991}}
+    * Expands on Banks' earlier (1989) paper, giving more information on system accuracy and the setup of the navigation transmitters.
+    * Contains some information on the versions of Datatrak Locator hardware available at the time, apparently Mk.I and Mk.II.
+    * Installation cost is quoted as being under £1,000 in 1991, equivalent to roughly £2,195 in 2020.
   * Hofmann-Wellenhof, B., Wieser, M. and Legat, K. (2003). **Navigation: Principles of Positioning and Guidance.** Wien: Springer, pp.156-158. {{anchor:HoffmanWellenhoff2003}}
     * Good summary of Datatrak. Explains the network structure, the 150km blanking distance, and the three-step (super-coarse, coarse, fine) navigation process.
   * Scorer, T., & Last, D. (1995). **The Current Status of the Securicor Datatrak System**. Journal of Navigation, 48(2), 204-214. doi:10.1017/S0373463300012662 {{anchor:Scorer1995}}
     * Referenced by [[#HoffmanWellenhoff2003]]
+  * Scorer, A. G. (1991). **The Development of Datatrak**. Journal of Navigation, 44(01), 37–47. \\ Available from: https://dx.doi.org/10.1017/s0373463300009711
+  * Dawes, S. R. (2001). **Datatrak Network Radio Access Interface Specification**. \\ Available from: [[https://www.fb.gv.at/dam/jcr:35df3d75-492b-4b9b-a355-5bc7cc5815b0/Datatrak%20T0062_3.pdf]], linked from [[https://www.fb.gv.at/Markt/markt-netzschnittstellen-uebersicht/markt-netzschnittstellen-a-l.html|this page]].
 ==== Relevant patents ====
-  * Anderson, P.M.: **Dual purpose, low profile antenna**. European patent EP0608992A1. \\ Online: https://patents.google.com/patent/EP0608992A1/
+  * Antenna
-    * Datatrak LF receive / UHF transmit antenna -- microstrip circular patch type.
+    * Anderson, P.M.: **Dual purpose, low profile antenna**. European patent EP0608992A1. \\ Online: https://patents.google.com/patent/EP0608992A1/
-    * Includes circuit diagram with component values.
+      * Datatrak LF receive / UHF transmit antenna -- microstrip circular patch type.
-  * Hall, P.S.: **Improvements in or relating to microstrip antennas**. European patent EP0174068A1. \\ Online: https://patents.google.com/patent/EP0174068A1/
+      * Includes circuit diagram with component values.
-    * More information on the design parameters of circular microstrip patch antennas.
+    * Hall, P.S.: **Improvements in or relating to microstrip antennas**. European patent EP0174068A1. \\ Online: https://patents.google.com/patent/EP0174068A1/
-  * Dusseux, T.; Gomez-Henry, M.: **Diplexing Radiating Element**. US patent US5055852. \\ Online: https://patents.google.com/patent/US5055852/
+      * More information on the design parameters of circular microstrip patch antennas.
-  * Crompton, E.W.: **Mobile transmitter/receiver**. European patent EP0292182B1. \\ Online: https://patents.google.com/patent/EP0292182B1/
+    * Dusseux, T.; Gomez-Henry, M.: **Diplexing Radiating Element**. US patent US5055852. \\ Online: https://patents.google.com/patent/US5055852/
+  * Locator and algorithms
+    * Crompton, E.W.: **Mobile transmitter/receiver**. European patent EP0292182B1. \\ Online: https://patents.google.com/patent/EP0292182B1/
+    * De la Salle, Paul G. and Cousins, Nigel J.: **Method and apparatus for determining the position of an object within lanes determined utilizing two independent techniques**. US patent US5402348A. \\ Online: https://patents.google.com/patent/US5402348A/
+      * Covers the coarse/fine acquisition process and lane estimation.
+      * Includes information on the three-LOP position error calculation.
+==== Forum posts and anecdotes ====
+"Vectorsum", Digital Spy forums, 14th April 2016. https://forums.digitalspy.com/discussion/comment/82125073#Comment_82125073
+> A Datatrak mast, eh? I didn't know any of those were still standing.... OT for the 'AM Deathwatch', but I worked for Securicor in the early nineties, with the PMR tentacle down in Radstock, in what was then Avon.
+>
+> The techs downstairs who had been trained to service the Datatrak VHF/UHF uplink units would talk now and again about how the 'RF module' was a bare push-pull power FET stage connected pretty much directly to the antenna. The uplink was a time division system over all units using that frequency everywhere in the UK and Ireland, and had such a miniscule duty cycle that neither any ATU nor any heatsinking was required for the RF stage.
+>
+> I would love to have actually seen one, but none came into the workshop in the year I was around as they were, quite literally, bomb-proof.
+===== The future =====
+  * Pelgrum, W.J. (2006). **New potential of low-frequency radionavigation in the 21st century** (doctoral thesis). ISBN 978-90-811198-1-8. Online: [[http://resolver.tudelft.nl/uuid:90450409-f146-4c45-839c-a4b484f723ff]]